标签:mapper SpringBoot DogInfo Example dogInfo example Mybatis new pageInfo
方式一
@Test
public void findByPageHleper() {
DogInfo dogInfo = new DogInfo();
dogInfo.setDogId("7");
Example example = new Example(DogInfo.class);
Example.Criteria criteria = example.createCriteria();
if (StringUtil.isNotNullOrNotEmpty(dogInfo.getDogId())) {
// property是实体类的字段属性
criteria.andLike("dogId", dogInfo.getDogId() + "%");
}
// orderBy的key是表的字段
//sql ==>SELECT * FROM dog_info WHERE (dog_id LIKE ?) order by record_id desc LIMIT ?
PageHelper.startPage(1, 10, "record_id desc");
PageInfo<DogInfo> pageInfo = new PageInfo<>(dogInfoMapper.selectByExample(example));
System.out.println("pageInfo.getSize() = " + pageInfo.getSize());//10
System.out.println("pageInfo.getTotal() = " + pageInfo.getTotal());//459
}
方式二
@Test
public void findByPageHleper2() {
DogInfo dogInfo = new DogInfo();
dogInfo.setDogId("7");
Example example = new Example(DogInfo.class);
Example.Criteria criteria = example.createCriteria();
if (StringUtil.isNotNullOrNotEmpty(dogInfo.getDogId())) {
// property是实体类的字段属性
criteria.andLike("dogId", dogInfo.getDogId() + "%");
}
// orderBy的key是表的字段
//sql ==>SELECT * FROM dog_info WHERE (dog_id LIKE ?) order by record_id desc LIMIT ?
PageHelper.startPage(1, 10, "record_id desc");
List<DogInfo> dogInfoList = dogInfoMapper.selectByExample(example);
PageInfo<DogInfo> pageInfo = new PageInfo<>(dogInfoList);
System.out.println("pageInfo.getSize() = " + pageInfo.getSize());//10
System.out.println("pageInfo.getTotal() = " + pageInfo.getTotal());//459
}
方式三
@Test
public void findByPageHleper3() {
DogInfo dogInfo = new DogInfo();
dogInfo.setDogId("7");
Example example = new Example(DogInfo.class);
Example.Criteria criteria = example.createCriteria();
if (StringUtil.isNotNullOrNotEmpty(dogInfo.getDogId())) {
// property是实体类的字段属性
criteria.andLike("dogId", dogInfo.getDogId() + "%");
}
// orderBy的key是表的字段
// sql==> SELECT * FROM dog_info WHERE ( dog_id like ? )
List<DogInfo> dogInfoList = dogInfoMapper.selectByExample(example);
PageHelper.startPage(1, 10, "record_id desc");
PageInfo<DogInfo> pageInfo = new PageInfo<>(dogInfoList);
System.out.println("pageInfo.getSize() = " + pageInfo.getSize());//459
System.out.println("pageInfo.getTotal() = " + pageInfo.getTotal());//459
}
标签:mapper,SpringBoot,DogInfo,Example,dogInfo,example,Mybatis,new,pageInfo 来源: https://blog.csdn.net/tanhongwei1994/article/details/95359886
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